[Bug target/77850] FAIL: gcc.dg/compat/scalar-by-value-4 c_compat_x_tst.o-c_compat_y_tst.o execute

["segher at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77850

--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Sat Jan 21 03:11:49 2017
New Revision: 244740

URL: https://gcc.gnu.org/viewcvs?rev=244740&root=gcc&view=rev
Log:
rs6000: Small varargs for BE SVR4 (PR61729, PR77850)

The varargs code for SVR4 puts all (integer) arguments in 4-byte slots.
When it then reads an item from there as something not a multiple of 4
bytes, it needs to adjust the address if big endian.  We didn't yet do
that.

This fixes the g++.dg/abi/scoped1.C, gcc.dg/compat/scalar-by-value-4,
and gcc.dg/compat/scalar-return-4 testcases.


        PR target/61729
        PR target/77850
        * config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Adjust address to
        read from, for big endian.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/rs6000/rs6000.c